Carton



C. W. VOGT May 27, 1969 CARTON Sheet Filed May 5. 1966 INVENTOR CLARENCEW. VOGT ay- 27, 1969 c. w. VOGT 3,446,418

CARTON Filed May a. 1966 Sheet 8 of s CLARENCE W. VOGT ORNEYS C. W. VOGTCARTON Filed May a. 1

mmnmm INVI-INTOR CLARENCE w. VOGT a IASHQQ X LdM/w ATTORNFYS 3,446,418CARTON Clarence W. Vogt, P.O. Box 232,

Westport, Conn. 06880 Filed May 3, 1966, Ser. No. 547,361 Int. Cl. B65d/14 US. Cl. 229-40 13 Claims ABSTRACT OF THE DISELOSURE This inventionrelates in general to new and useful improvements in cartons orcontainers, and more particularly to a receptacle which is readilyadaptable to be filled utilizing a differential pressure fillingapparatus.

A primary object of this invention is to provide a novel carton whichmay be seated within a supporting frame and having flaps extendingupwardly beyond the walls of the body thereof whereby the carton may beinitially filled beyond the normal confines thereof above the walls butwithin the fiaps and then the material placed therein compacted so as tobe contained within the normal confines of the carton, after which theupstanding flaps may be folded into overlying relation to the cornpactedproduct.

Another object of this invention is to provide adjacent ends of theflaps with releasable connectors to prevent the escape of a fill betweenthe ends of the flaps.

Another object of this invention is to provide a novel carton which mayhave the individual components thereof secured together and thereafterfolded to a relatively fiat blank state for ease of shipment andhandling.

Another object of this invention is to provide a novel sift proof cartonwherein at least one pair of the closure flaps of the each end of thecarton have the adjacent edges thereof in overlapped relation so as toeliminate any possibility of material sifting between the closurepanels.

Yet another object of this invention is to provide a novel carton whichis formed of a plurality of pieces of paper material and wherein theindividual pieces of material are of difierent weights so as to providethe maximum strength where required and at the same time permit asavings in material.

With the above and other objects in view that will hereinafter appear,the nature of the invention will be more clearly understood by referenceto the following detailed description, the appended claims and theseveral views illustrated in the accompanying drawings.

In the drawings:

FIGURE 1 is a plan view of a carton blank formed in accordance with thisinvention.

FIGURE 2 is a perspective view showing the carton blank of FIGURE 1 in apartially erected condition and inserted into a form retaining framefrom the underside of the frame.

FIGURE 2a is a perspective view similar to FIGURE 2 and shows the samecarton in a partially erected state ready for movement into the framefrom the top of the frame.

FIGURE 3 is an exploded perspective view showing the carton after beingfilled and in an intermediate stage of being closed.

FIGURE 4 is a perspective view of the carton illustrating a furtherstage in the closing thereof.

FIGURE 5 is a perspective view of the completely closed carton with thecarton now being inverted to its upright storage position.

FIGURE 6 is a perspective view of a partially secured together blank foranother form of carton.

FIGURE 7 is an exploded perspective view of the carton of FIGURE 6 withthe same being filled and in a partially closed position.

FIGURE 8 is a perspective view of the carton of FIGURE 7 after beingclosed.

FIGURE 9 is a bottom perspective view of the carton of FIGURE 8 andshows further the details thereof.

FIGURE 10 is a perspective view of a blank for still another form ofcarton.

FIGURE 11 is a perspective view of the carton of FIGURE 10 positionedwithin the supporting frame of a filling machine ready for receiving aproduct.

FIGURE 12 is a top perspective view of the filled and partially closedcarton.

FIGURE 13 is an enlarged fragmentary vertical sectional view taken alongthe line 1313 of FIGURE 12 and shows the specific construction of thecarton.

FIGURE 14 is a fragmentary perspective view showing the manner in whichadjacent ends of flaps are telnporarily interconnected.

Referring now to the drawings in detail, it will be seen that there isillustrated in FIGURE 1 a blank for a carton member, which blank isgenerally referred to by the numeral 15. The blank 15 is formed of anelongated sheet of material, preferably paper material, which sheet isidentified by the numeral 16. To the central portion of the sheet 16there is secured a flatly folded carton body, which is generallyidentified by the numeral 17 and which is preferably formed ofinexpensive paperboard.

The sheet 16 is provided with two longitudinally extending fold lines 18disposed in alignment with the adjacent edges of the body 17. The sheet16 is also provided with a pair of transversely extending fold lines 19which are disposed in alignment with the folded body 17. The fold lines13 and 19 define a rectangular closure panel 20 which underlies the body17. Outside of the fold lines 18, the fold lines 19 define a pair offlaps 21.

The sheet 1 6 is provided with a second pair of transversely extendingfold lines 22. Each set of fold lines 19 and 22, in cooperation with thefold lines 18, defines a closure panel 23. The fold lines 22 and 18 alsodefine closure flaps 24 longitudinally adjacent the closure panels 23.

At the corners of the sheet 16 are closure flaps 25. Between the flaps25 and the flaps 21 there are generally rectangular flaps 26. Each flap26 is provided with a pair of diagonal fold lines 27.

The body 17 is of a continuous construction and includes four upstandingwalls of which two walls are in the form of sides 28 and two walls arein the form of ends 30. The walls of the body 17 are connected togetherby means of a flap 31 which is illustrated as being at a corner of thebody 17, but may be intermediate the edges of one of the walls.

At the lower edge of each of the sides 28 is an inwardly directed flap32. A like flap 33 is disposed at the lower edge of each of the ends 30.The flaps 32 and 33, which are inwardly directed, are secured to theclosure panel 20 by means of any conventional adhesive.

The body 17 also includes upstanding flaps. These flaps are relativelynarrow and include flaps 34 extending from the sides 28 and fiaps 35extending from the ends v2 30. The widths of the flaps 34 and 35 aresubstantially the same as those of the flaps 32 and 33.

It is also to be noted that the ends 30 of the flaps 35 have diagonalfold lines 36 extending upwardly in converging relation from the bottomcorners of the ends 30. These fold lines 36 permit the flat folding ofthe ends 30 and the flaps 35 upon themselves with the sides 28 and theflaps 34 in overlying relation thereto, as is shown in FIGURE 1, so thatthe secured together sheet 16 and the body 17 may have the flatly foldedblank condition shown in FIGURE 1 for ease of handling and storage.

It is intended that the carbon formed from the blank 15, which carton isgenerally referred to by the numeral 40, be filled utilizing adifferential pressure filler. In order to prevent collapsing of thecarton during the filling operation, it is positioned within a generallyrectangular form retaining frame which is illustrated in phantom linesin FIGURE 2. and which is identified by the numeral 41. It will bereadily aparent that once the body 17 has been erected, the body 17 maybe slid up into the frame 41 from the bottom thereof. On the other hand,there are instances where the filling apparatus will be of a naturerequiring that the carton 40 be inserted in. the frame 41 from the topin the manner generally shown in FIGURE 2a. In such instances, it willbe necessary to loosely fold the sheet 16 up around the erected body 17in the manner shown in FIGURE 2a.

Referring now to FIGURE 2a, it will be seen that when it is desired toinsert the carton 49 into the frame 41 from the top, the sheet 16 isfolded up around the carton body 17. This is first accomplished byfolding the flaps 24 into overlying relation to the panels 23. Then theflaps 21 are folded up alongside the ends 30, after which the panels 23are folded up alongside the sides 28, followed by the infolding of theflaps 26 over the flaps 21 and the ends 30. The carton 40, with thesheet 16 so temporarily folded, may now be slid into the frame 41 whichopens a slight amount to provide the necessary clearance.

Referring now to FIGURE 3, it will be seen that after the carton 40 hasbeen filled, the flaps 35 are folded over the product 42. Then a closurepanel 43 is placed into overlying relation with respect to the open endof the filled carton 4t and bonded to the flaps 35. The closure panel 43has a pair of depending flaps 44 which are telescoped relative to theends 30 and are suitably adhesively secured thereto. Next the flaps 34are folded into overlying relation with respect to the free edges of theclosure panel 43 and suitably adhesively secured thereto.

After the closure panel 43 has been secured to the carton 40, the sheet16 is folded up around the carton body 17 and the closure panel 43 withthe panels 23 completely covering the sides 28 of the body and the flaps24 overlying the flaps 34, as is shown in FIGURE 4. At the same time,the flaps 21 are folded up over the lower portions of the flaps 44. Theflaps 25 are folded down over the upper corners of the flaps 44 andsecured thereto. In the folding of the flaps 21 and 25, the flaps 26 arediagonally folded along the fold lines 27 so as to be generallytriangular in outline. The flaps 26 are then folded inwardly towards theflaps 44 and are bonded to the flaps 21, 25 and 44 to complete thepackage. At this time the package, which is generally referred to by thenumeral 45, is inverted, the carton 40 having been filled from thebottom. The package 45 is shown in its upright position in FIGURE 5.

At this time it is pointed out that three grades of material areutilized in forming the completed carton. The sheet 16 is formed of arelatively flexible material, the carton body 17 is formed of a mediumstrength material, such as paperboard, and the closure panel 43 isformed of .a higher strength material, such as E-flute which is a o rugt d oard.

Referring now to FIGURES 8 and 9, it will be seen that there isillustrated another form of package having substantially the sameconfiguration as the package 45, but formed of a slightly different typeof carton. This package is generally referred to by the numeral 50, andis formed from a carton, generally referred to by the numeral 51, and aclosure panel 52.

Referring now to FIGURE 6 in particular, it will be seen that the carton51 is of a one-piece construction and includes a generally rectangularbody formed of four walls including two sides 53 and two ends 54. Thewalls of the body of the carton 51 are interconnected by means of a flapwhich is illustrated as being on the free edge of one of the ends 54.However, it will be apparent that the flap 54 could be intermediate theends of one of the sides or the ends. Also, it will be apparent that theflap 55 may have a greater extent, although it is not necessary.

The lower edge of each of the sides 53 terminates in a closure panel 56.Similarly, the lower edge of each of the ends 54 terminates in a closurepanel 57. The closure panels 56 extend from their respective sides adistance in excess of one half of the length of the ends 54 so that whenthey are folded, their edges remote from the sides 53 will overlap. In asimilar manner, each of the closure panels 57 projects from itsrespective end a distance in excess of one half of the length of thesides 53 so that the adjacent edges of the closure flaps 57 willoverlap.

When the closure flaps 56 and 57 are folded to form a closure of thecarton 51, as is best shown in FIGURE 9, the flaps 56 are first foldedinto overlapping relation and bonded together, after which the flaps 57are folded with their edges overlapping and bonded together. Inaddition, the flaps 57 will be secured to the flaps 56 to form asift-proof closure for the carton 51.

The sides 53 have projecting upwardly therefrom narrow flaps 58. Similarnarrow flaps project upwardly from the ends 54. The flaps 58 and 60permit the filling of the carton 51 above the tops of the walls 53, 54after which the material projecting above the body of the carton may becompacted down thereinto.

It is to be understood that after the flaps 56 and 57 have beenconnected together and the flap 55 connected to a respective portion ofthe carton body, the carton 51 may be folded to a relatively flat statefor handling and storage. To this end, each of the ends 54 and itsassociated narrow flap 60 is provided with diagonal fold lines 61. Thesediagonal fold lines 61 permit the carton 51 to be folded in the samemanner as that described above with respect to the carton body.

Referring now to FIGURE 7 in particular, it will be seen that after thecarton 51 has been filled, the flaps 60 will be folded into overlyingrelation with respect to the product 62 placed within the carton. Thenthe closure panel 52 is placed into overlying relation with respect tothe flap 60 and suitably adhesively secured thereto. The package 50 isthen completed by folding the flaps 58 into overlying relation to theclosure panel 52 and adhesively securing the same together.

At this time it is pointed out that the closure panel 52 has a removablepanel portion 63 which is defined by a weakening line 64 formed in theclosure panel 52. Thus, when it is desired to dispense the contents ofthe package 50, it is merely necessary to tear out the removable panel63.

The carton 51 and the closure panel 52 may be formed of any economicalpaperboard material. However, it has been found that a maximum strengthto cost ratio can be obtained with E-fiute which is a corrugated board.

Referring now to FIGURE 1-0 in particular, it will be seen that there isillustrated a carton blank, generally identified by the numeral 65, fromwhich acarton shown in FIGURE 11 and generally referred to by thenumeral 66, is formed. The blank 65 is formed from a single sheet ofpaperboard material which may be of any type includ ing E-flutecorrugated board.

The carton 66 includes an upstanding body of rectangular outline havingfour walls including two sides 67 and two ends 68. The carton body iscontinuous with the juncture being by way of a flap 69. Although theflap 69 is illustrated as being at one of the corners of the carton 66,it is to be understood that it may be equally as well placed in thecenter of one of the sides or one of the ends of the carton.

Each of the sides 67 has extending from the opposite edges thereof aclosure flap 70. A similar closure flap 71 extends from the edges ofeach of the ends 68. It is to be understood that if it is so desired,the flap 69 may extend along respective ones of the flaps 70 and 71.

When the carton 66 is erected from the blank 65, it is first shaped toits rectangular form, after which the lowermost ones of the flaps 71 arefolded to close one end of the carton and the overlapped edges thereofare suitably bonded together, Then the lowermost flaps 70 are foldedbeneath the bonded together flaps 71 and are bonded to each other and tothe flaps 71 to form a sealed bottom for the carton 66, the bottom beingreferred to by the numeral 72.

After the carton 66 has been so partially erected, it may be filled tocontain the desired weights of products, by present day fillingmachines. The carton 66 may also be filled after having been so erected,and after having been inserted within frames of filling equipment suchas shown and described in my copending application Ser. No. 518,269filed Jan. 3, 1966. The carton 66 may be filled to levels above thewalls 67, 68 which define the normal confines of the carton, and thefilled material then compacted to the tops of the walls 67, 68 to thenormal confines of the carton body. Thereafter the filled carton isclosed by first folding inwardly the flaps 71 and securing together theoverlapped edges thereof. Then, as is shown in FIGURE 12, first one ofthe flaps 70 is folded down into overlying relation to the flaps 71 andis bonded thereto, after which the remaining flap 70 is folded down andis bonded to the first flap 70 and the flaps 71 to complete the package.

It is to be understood that the carton 66 may be filled with a granularproduct which may be readily poured therefrom. Should this be the case,then one of the sides or ends of the carton body may be provided with asuitable pour facilitating device in the form of a removable panelportion 73 which is defined by weakening lines 74. When it is desired todispense the product packaged within the carton 66, it is merelynecessary to tear out the removable panel portion 73 and thereafter pourthe product through the resultant opening.

It will be appreciated that when the aforedisclosed cartons are filledwith certain materials, there will be a tendency for the material whichis disposed above the upper edge of the body of each carton to flow outthrough the minute opening between the ends of the upper flaps. This maybe readily eliminated in the manner shown in FIGURE 14 with respect tothe carton formed from the blank 15. At each corner of the carton, athin strip of material 80 will be permanently secured to one of theflaps such as by an over-all coating of adhesive 81 and releasablysecured to the other of the two adjacent flaps by means of limitedadhesive areas, such as the adhesive spots 82. It is to be understoodthat the strip 80 will be permanently secured to that flap which isfolded first. In the case of the carton shown in FIGURE 14, the flaps 35will be folded in advance of the flaps 34 and therefore, the strip 80 ispermanently secured to the flaps 35 and releasably secured to the flap34.

It will be understood that when the flap 35 is folded downwardly to ahorizontal position, the strip 80 will be placed under tension andpulled from the flap 34. Thereafter, the flap 34 may be folded to itsgenerally horizontal position. Inasmuch as the strip is formed of thinmaterial, it will in no way interfere with the closing of the carton. Itis also to be noted that the strip 80 may extend downwardly into partialoverlapping relation with respect to the body walls 28 and 30, ifdesired, to assure a seal.

Although it is preferred that the strip 80 be formed of inexpensivepaper material, it is feasible to form it of readily stretchable plasticmaterial. In such event, when the flaps have a relatively small height,the plastic strip could be permanently secured to both the flaps withthe plastic strip stretching as the flap 35 is moved downwardly inadvance of the flap 34.

It will be readily apparent that all of the cartons formed in accordancewith this invention are sift-proof and are of a construction so as to bereadily usable in conjunction with a differential pressure filler whichincludes a form retaining frame, such as the frame 41. Also, by theeconomical use of materials having predetermined strengths, the cost ofthe cartons may be held to a minimum. Further, while the cartons 51 and66 have been illustrated with all of the closure flaps forming the endclosures thereof having the free ends thereof overlapped relative toopposed like closure flaps, in order to conserve material, only thoseclosure flaps secured to the longer body walls, that is the sides of thecarton body, need have overlapping ends to make the end closuressift-proof.

I claim:

1. A sift-proof carton comprising a rectangular body having walls in theform of sides and ends, a closure flap extending from a predeterminededge of each of said sides and ends, at least one pair of opposedclosure flaps extending from the opposed edges of these associated wallsan amount in excess of one half the length of the other of said bodywalls and having a lapped sealed connection between free edge portionsthereof the opposite edges of said body walls having narrow closureflaps projecting therefrom, and a separate closure panel secured to saidnarrow closure flaps.

2. The carton of claim 1 wherein one pair of said narrow closure flapsunderlie said closure panel and the other pair of said narrow closureflaps overlie said closure panel.

3. A knock down sift-proof carton comprising a rectangular body havingwalls in the form of sides and ends, a closure flap extending from apredetermined edge of each of said sides and ends, at least one pair ofopposed closure flaps extending from the opposed edges of theseassociated walls an amount in exces of one half the length of the otherof said body walls and having a lapped sealed connection between freeedge portions thereof, said carton in its knock-down state being flatlyfolded with said body being continuous and said closure flaps beingpermanently secured together in said lapped sealed relation.

4. The sift-proof carton of claim 3 wherein an opposed pair of said bodywalls have diagonal folds and are reversely folded upon themselves andsaid closure flaps, and the other pair of said body walls are folded inoverlying relation to said folded pair of body walls and said closureflaps.

5. A sift-proof carton comprising a carton member having a generallyrectangular body formed of interconnected walls and a sealed end closureclosing one end of said body, a first pair of narrow flaps extendinggenerally across the other end of said body in opposed relation, aclosure panel overlying and secured to said first pair of narrow flaps,and a second pair of narrow flaps extending generally across said bodyother end in opposed relation and normal to said first pair of narrowflaps and sealed to said closure panel in overlying relation thereto.

6. The carton of claim 5 wherein said closure panel has a pair of flapsextending from opposite ends thereof and secured to those body wallsfrom which said first pair of narrow flaps extend.

7. The carton of claim 6 wherein said end closure is formed separatefrom said body, has flaps overlapping said closure panel flaps and otherflaps overlapping edges of said closure panel remote from said closurepanel flaps.

8. The carton of claim 7 wherein said body is formed of a mediumstrength material, said closure panel is formed of a higher strengthmaterial, and said end closure is formed of a lower strength material.

9. The carton of claim 5 wherein said end closure is formed separatefrom said body and is sealed to all of said body walls and to saidclosure panel.

10. The carton of claim 5 wherein said end closure is formed separatefrom said body and said body has other pairs of narrow flaps at said oneend sealed to said end closure.

11. A carton member comprising a generally rectangular body havinginterconnected walls, and an end closure sealing one end of said body,said body having inwardly extending narrow flaps at said one end securedto said end closure, and said end closure extending outwardly beyondsaid body for eventual folding up around said body.

12. The carton member of claim 11 wherein said carton member is formedfrom a flatly folded blank wherein said end closure is planar and saidbody walls are folded into overlying relation to said end closure.

13. The sift-proof carton of claim 5 wherein ends of adjacent narrowflaps are interconnected by temporary sealing means prior to the fillingof the carton to prevent the loss of fill between narrow flap ends, andwherein the narrow flaps are free to fold inwardly notwithstanding theexistence 0t said sealing means.

References Cited UNITED STATES PATENTS 939,825 11/1909 Frank 229-171,667,869 5/ 1928 Peterson 229-33 X 2,142,342 1/1939 Bensel 229-37 X2,395,663 2/ 1946 Howard 229-37 2,421,225 5/ 1947 Stensgaard 229-232,568,170 9/1951 Ringler 229-14 2,712,382 7/1955 Clarke 229-33 X2,986,321 5/ 1961 Schaich 229-23 3,245,526 4/ 1966 Palmer 229-37 X3,261,536 7/1966 Bixler 229-37 3,3 11,286 3/ 1967 Giacoppe 229-37688,114 12/1901 Plester 229-40 X 1,152,353 8/ 1915 Schwerdtle 229-401,827,334 10/1931 Rider.

1 FOREIGN PATENTS 960,832 7/ 1964 Great Britain.

US. Cl. X.R.

